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Improve type checking in ol.renderer.canvas.Map

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This commit is contained in:
Tom Payne
2013-11-24 14:33:47 +01:00
parent 617635ed80
commit 6584ef985f
1 changed files with 16 additions and 5 deletions
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21
src/ol/renderer/canvas/canvasmaprenderer.js
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@@ -15,6 +15,7 @@ goog.require('ol.render.EventType');
goog.require('ol.render.canvas.Immediate');
goog.require('ol.renderer.Map');
goog.require('ol.renderer.canvas.ImageLayer');
goog.require('ol.renderer.canvas.Layer');
goog.require('ol.renderer.canvas.TileLayer');
goog.require('ol.renderer.canvas.VectorLayer');
goog.require('ol.source.State');
@@ -95,6 +96,17 @@ ol.renderer.canvas.Map.prototype.dispatchComposeEvent_ =
};
/**
* @param {ol.layer.Layer} layer Layer.
* @return {ol.renderer.canvas.Layer} Canvas layer renderer.
*/
ol.renderer.canvas.Map.prototype.getCanvasLayerRenderer = function(layer) {
var layerRenderer = this.getLayerRenderer(layer);
goog.asserts.assertInstanceof(layerRenderer, ol.renderer.canvas.Layer);
return /** @type {ol.renderer.canvas.Layer} */ (layerRenderer);
};
/**
* @inheritDoc
*/
@@ -125,11 +137,10 @@ ol.renderer.canvas.Map.prototype.renderFrame = function(frameState) {
var layerStates = frameState.layerStates;
var layersArray = frameState.layersArray;
var viewResolution = frameState.view2DState.resolution;
var i, ii, layer, layerRenderer, layerState;
var canvasLayerRenderer, i, ii, layer, layerState;
for (i = 0, ii = layersArray.length; i < ii; ++i) {
layer = layersArray[i];
layerRenderer =
/** @type {ol.renderer.canvas.Layer} */ (this.getLayerRenderer(layer));
canvasLayerRenderer = this.getCanvasLayerRenderer(layer);
layerState = layerStates[goog.getUid(layer)];
if (!layerState.visible ||
layerState.sourceState != ol.source.State.READY ||
@@ -137,8 +148,8 @@ ol.renderer.canvas.Map.prototype.renderFrame = function(frameState) {
viewResolution < layerState.minResolution) {
continue;
}
layerRenderer.prepareFrame(frameState, layerState);
layerRenderer.composeFrame(frameState, layerState, context);
canvasLayerRenderer.prepareFrame(frameState, layerState);
canvasLayerRenderer.composeFrame(frameState, layerState, context);
}
this.dispatchComposeEvent_(ol.render.EventType.POSTCOMPOSE, frameState);